Apparatus for winding spools and cops



Nov. 14, 1933- H. SCHWEITER 1,935,524

APPARATUS FOR WINDING SFOOLS AND COPS Filed Aug. 12, 1931 3 Sheets-Sheetl Nov. 14, 1933. H. SCHWEITER 1,935,524

APPARATUS FOR WINDING SPOOLS AND CUPS Filed Aug. 12. 1951 S Sheets-Sheet2 girl/01111114 \r Nov. 14, 1933.

H. SCHWEITER 1,935,524

APPARATUS FOR WINDING SPOOLS AND COPS Filed Aug. 12. 1931 5 Sheets-Sheet3 4 Sam/H75 movement against theaction of a spring, for the PatentedNov. 14, 1933 I UNITED STA 'APPABATUS FOR WINDING SPOOLS ANDCOPS- HansSchweiter, Horgen, near Zurich, Switzerland Application August 12, 1931,Serial No. 556,667,

and in Germany October 20,1930 6 Claims. (01. 242-27) The invention:relates to weft winders of the kind having an axially movablewindingspindle and an auxiliary thread guide to which the windingspindle imparts a reciprocating or traversing purpose of winding areserve of thread at the beginning of the spool, the auxiliaryguide-being after completion of the thread reserve, removed from thepath of movement of the winding spindleand stopped at the same timereleasing the thread.

The known winders .of this kind are so designed that the thread on itsway to the spool is guided by the principal thread guide to theauxiliary guide, the latter, reciprocated by thewinding spindle, beingpulled away fromthis spindleafter completing the reserve, and releasingthe thread, so that the thread is then guided by the main guide alone.In this arrangement the thread, while the reserve is beingwound,isjsubjected to an increasedstress, due to being guided through an angleby both the thread guides and itstension is alternately increased andreduced. In

. consequence, breakages of thread and the-troubles resulting therefromarevery liable to occur. Weft winders are also known in which during theformation of the'reserve, the winding spindle .and the thread guide rodare simultaneously moved to and fro, with strokes or different lengths,

, :and the thread guide rod is then stopped. in

this case unduestress'in the thread 'iswavoided, but large masses havetobe; moved, which affect the running of the machine unfavourably.

The object of this invention is to remove these drawbacks: This iseffected, in the first place, by arranging that e the reciprocatingauxiliary thread guide forms with a stationary guide member, an anglewhich receives the. thread during the formation of the reserve winding,and that the auxiliary guide is, by a'lever operated by a ratchetdevice; given an additional displace"- .ment, so that the thread slipsover the free end of the stationary guide member'and is caught by theprincipal guide.' In this way the guiding of the threadduring thewinding of the reserve takes place independently of the principal guide,which only'comes into operation after the completion of the reservewinding. Undue stressand wear are consequently avoided, so that thedevice is particularly suitedfor-delicate yarns.

The ratchet device may be arranged. with the disengaginglever ontheunder side of the" gear box cover, and can be liftedoff together withthe latter without unfastening screws or the like. In this way access isvery greatly facilitated, both and to the gearing of the winder and alsoto the mechanism oi the auxiliary guide, so that anything which goeswrong can be detected and put right without loss of time. u

Two examples of apparatus according to the invention are shown in theannexed drawings, in Figs. 1 to 6 and Figs. '7 to 9 respectively.

Fig. 1 is a sectional elevation of the winder,and Fig. 2 is aplan'viewthereof, assuming the cover to be transparent; u Fig. 3 is aplan view showing some oi the parts in another position.

- Fig. 4 shows the ratchet mechanism toa larger scale.

Fig. 6 shows a detail in'elevation. v

Fig. '7 is a vertical section ofamodified form,

Figs. 8 and 9 are the plan views showing some of the parts in twodifierent positions. v

In the gear box 10 shown in F'g. 1, there is mounted the winding spindle11, which is rotated in the usual way by devicesnot shown, and is given;a reciprocating movement by meansv of a cam 13 driven by a spur wheel 12.and a pinion so 7 12' on the spindle. On the spindle llthere is adriver14, having a pin'15, which engages in the groove 16 of the cam.13. The thread 1'7 passes through a stationary main-guide 18, which ispart of the usual feelerv 19, and is wound on the 35 weft spool=20.Owing'to the movement of the spool 20 in relation to. the thread guide18 a tapered package of thread is wound.

For guiding the thread during the winding of the reserve there is adevice 21, which consists 0 of 'a stationary bent rod 22 and an axiallymovable auxiliary thread guide 23. The rod 22 is fixed to a bush 24 inthe wall'of the gear box 10, and the hushacts asa guide for the'auxiliary thread guide 23. The adjacent ends of the rod 22 and guide 23are bent at right angles in opposite directionsto form arms 25 and 26.During the formation of the reserve of thread, the

thread lies-in the angle made by'the arm 25 where it extends across therod 22. At 'therear endoi the auxiliary guide 23 there is a bracket 27,on which are an upwardly directed pin 30 and a fork 28. The latterengages one of two rods on which the driver 14 moves, and is held 5 by aspring 29 against the driver. The auxiliary guide 23 consequently takespart in the'reciprocating movement of the spool 20, and the thread 1'?always runs on to the spool at the; same place, so that a reserve ofthread is wound.

Fig. 5 is the section on the line v-i-vor Fig. 4. 7o 1 The followingarrangement serves to put the auxiliary guide out of action.

On the lid 31 of the gear box 10 there is a starting lever 32 fixed to ashaft 33. On the shaft 33 inside the lid there is mounted a lever 34,having an arm or disengaging lever 35 abutting against the hub 36 of aratchet wheel 37. A spring 38 tends to rock the levers 34 and 32clockwise; To the lever 34 an actuating lever 39 is pivoted at 40 andthe end of the lever 39 is bent to form a U-shaped guide 41. At 42 apawl 43 is pivoted to the guide 41 and this pawl engages the ratchetwheel 37. The pawl is connected to the lever 34 by a spring 44.

The ratchet wheel 3'7 is mounted on a bush 45 fixed to the box lid 31which bush serves as a bearing for a pin 46. On this pin there is a disc48 provided with a stop 47, and the pin has a knob 49 for turning it.This knob has a spring arm 50, with a stud 51adapted to engagedepressions 52 in adisc 53, for the purpose of retaining the stop 47 inselected positions. Between the disc 48 and the ratchet wheel 37 thereis a helical spring 54, which tends to rotate the ratchet wheel 3? sothat a pin 55 fixed to the ratchet wheel abuts against the stop 47. Inthe hub 36 of the ratchet wheel 37 there is a recess 56, which the lever35 engages when the ratchet wheel 3'7 has been rotated to a certainposition.

The mode of operation of the device is as follows:-

When by the aid of the knob $9 the adjustment has been made for thedesired reserve of thread, the lever 32 is rotated counter-clockwise.The lever 34 is consequently disengaged from the recess 56 in the hub 36and releases the ratchet wheel 37, which turns under the action of thespring 54 until its stop pin 55 strikes the stop 47 on the disc 48. Theauxiliary guide then takes partin the reciprocating movement of thespool, its pin 30 driving the lever 39, so that the pawl e3 rotates theratchet wheel 37 to the extent of one tooth. The spring 44 causes thelever 39 to swing back so that by the reciprocating movement of theauxiliary guide the ratchet wheel 37 is gradually rotated until therecess 56 reaches the lever 35 and the latter is rocked clockwise by thespring 38. The pin 57 on the lever 34 strikes the lever 39 and movesthesame. As, however, the pin 30 has previously. entered the U-shapedguide 41, the auxiliary guide 23 is shifted to the left, beyond'its deadcentre. It'is then in the position shown in Fig. 3, in which the thread1'7 no longer receives any guidance from the rod 22, but slips past thearm 26 and is caught by the principal guide 18. At this stage the normalwinding begins.

In the modification shown in Figs. '7 to 9, the stationary guide memberis a straight rod 58, which is fixed byan extension 59 to the lid 31.

On the rod 58 there is a sliding bush 60, into which engages a rod 62,axially movable at 61 in a hole in the lid 31. The bush has a cross bar63. The reciprocating movement of the auxiliary guide 62, 63 and thethrowing out of operation thereof are effected in the same way as in thecase of the auxiliary guide 23. The guiding of the thread 17 is theneffected by the angle formed between the stationary rod 58 and the crossbar 63. When the auxiliary guide is put out of opera- 7 The lid can belifted off the gear box without having to unfasten any screws, inasmuchas with the construction form according to Figs. 1 to 6 the pin 30 andlever 39 can be disengaged freely and with the construction according toFigs. '7 and 9 the fork 28 is lifted off the guide rod.

What I claim as my invention is:-

1. In a cop winder, a rotatable and reciprocable winding spindle, a mainthread guide associated with said spindle, an auxiliary thread guideunit comprising a stationary guide member and a reciprocating guidemember cooperatively disposed with respect to each other, connectingmeans between said spindle and said reciprocating guide member forreciprocating said guide member synchronously with said winding spindleto wind a reserve of thread from said auxiliary guide unit to saidspool, and means responsive to a predetermined number of turns of thespindle for transferring said thread, running directly from its source,from said auxiliary guide to said main thread guide and renderinginoperative said auxiliary guideunit.

2. In a cop winder, a winding spindle, a spindle shaft connected to saidspindle, means for rotating and reciprocating said spindle shaft, a.main thread guide associated with said spindle, an auxiliary threadguide unit comprising a stationary guide member and a reciprocatingguide member cooperatively disposed with respect to each other, means onsaid spindle shaft for actuating said last mentioned guide memberin'conjunction with said spindle to apply a reserve of thread directlyfrom said auxiliary guide unit to said spool, a lever actuated by themovement of said reciprocating member, intermittently operating meansactuated by said lever, and means controlled by a predetermined settingof said last mentioned means for disengaging said reciprocating guidemember from said spindle'shaft and'simultaneously transferring thethread carried by said auxiliary thread guide unit to said main threadguide. V

3. In a cop winder, a winding spindle, a spindle shaft connected to saidspindle, means for rotating and reciprocating said spindle shaft, a mainthread guide associated with said spindle, an

auxiliary thread guide unit comprising a stationary' guide member and areciprocating guide member cooperatively disposed with respect to eachother, means on saidspindle shaft for actuating said last mentionedguide member in conjunction with said. spindle to apply a reserve ofthread directly from said auxiliary guide unit to said spool, anactuating lever controlled by the movement of said reciprocating member,a disengaging lever connected to said actuating lever, a ratchet pawlconnected to said actuating lever, a ratchet wheel intermittentlyactuated by said pawl, a hub connected coaxially with said wheel havinga depression therein, means for pressing said disengaging lever againstsaid hub, a lug on said disengaging lever-cooperating with saidactuating lever, and means for rocking said actuating lever by said lugresponsive to the entry of said disengaging lever in the depression ofsaid hub to transfer the thread from said auxiliary thread guide unit tosaid main thread guide and for arresting said reciprocating guidemember.

4. In a cop winder, a winding spindle, a spindle shaft connected to saidspindle, means for rotating and reciprocating said spindle shaftdisposed in a gear box, a main thread guide associated with saidspindle, an auxiliary thread guide unit comprising a stationary guidemember and a reciprocating guide member cooperatively disposed withrespect to each other, means on said spindle shaft for actuating saidlast mentioned guide member in conjunction with said spindle to apply areserve of thread directly from said auxiliary guide unit to said spool,means responsive to a predetermined numberof turns of said spindle torender inoperative said auxiliary thread guide unit mounted on the coverof the gear box comprising an actuating lever" controlled by themovement of said reciprocating member, a disengaging lever connected tosaid actuating lever, a ratchet pawl connected to said actuating lever,a ratchet wheel intermittently actuated by said pawl, a hub connectedcoaxially with said wheel having a depression therein, means forpressing said disengaging lever against said hub, a lug on saiddisengaging lever cooperating with said actuating lever, and means forrocking said actuating lever by saidlug responsive to the entry of saiddisengaging lever in the depression of said hub to transfer the threadfrom said auxiliary thread guide unit to said main thread guide and forarresting said reciprocating guide member.

5. In a'cop winder, a winding spindle, a spindle shaft connected to saidspindle, means for rotating and reciprocating said spindle shaft, a mainthread guide associated with said spindle, an auxiliary thread guideunit comprising a stationary guide member and a reciprocating guidemember cooperatively disposed with respect to each other, means on saidspindle shaft for actuating said'last mentioned guide member inconjunction with said spindle to apply a reserve of thread directly fromsaid auxiliary guide unit to said spool, an actuating lever controlledby the movement of. said reciprocating member, a disengagingleverconnected to said actuating lever, a ratchet pawl connected to saidactuating 1 lever, a ratchet wheel intermittently actuated by said pawlagainst the action of a yielding force, a hub connected coaxially withsaid wheel-having a depression therein, means for pressing saiddisengaging lever against said hub, means for adjusting theangular'displacement between said depression and said disengaging lever,a lug on said disengaging lever cooperating with said actuating lever,and means for rocking said actu- V winding spindle, a main thread guideunit asso- 1 ciated with said spindle, an auxiliary thread guide memberdesigned to guide the thread directly from its. source to a spool uponthe spindle, connecting means between said spindle and guide member forreciprocating said guide member synchronously with said winding spindleto wind a reserve of thread from the thread source to the spool, andmeans responsive to a predetermined number of turns of said spindle forshifting the thread, running directly from its source, from saidauxiliary guide member onto said main thread guide unit and renderinginoperative said auxiliary guide member;

HANS SCHWEITER.

